How to calibrate a burette

To show the electron configuration for an atom, what is the advantage of using an orbital notation compared to a dot structure? Orbital notation takes up less space. Orbital notation shows the spin of the electrons.

Liquid nitrogen has different properties from gaseous nitrogen. Is it a chemical change when liquid nitrogen warms to gaseous nitrogen?

How many milliliters of water at 23 °C with a density of 1.00 g/mL must be mixed with 180 mL (about 6 oz) of coffee at 95 °C so that the resulting combination will have a temperature of 60 °C?

Calculate the energy in joules and calories required to heat 25.0 g of water from 12.5C to 25.7C

What differentiates the isotopes of an element?

Balance the following chemical equation. Mg + N2 → Mg3N2 A. 3 Mg + N2 → Mg3N2 B. 3 Mg + 2 N2 → Mg3N2 C. 6 Mg + 2 N2 → 3 Mg3N2 D. Mg + N2 → Mg3N2

Which of the following correctly categorizes the following infectious agents? 1. Viruses-living; bacteria-living 2. Viruses-nonliving; bacteria-nonliving (this answer choice is wrong) 3. Bacteria-nonliving; viruses-living 4.

A student wants to compare how easily a metal and a plastic spoon of the same temperature can transfer thermal energy. Which of the following activities should the student perform? Measure the effort required to bend each spoon.

What is the molar mass of a compound?

an element has an isotope with a mass of 203.973 amu and and abundance of 1.40%. another isotope has a mass of 205.9745 amu with an abundance of 24.10%. a third isotope weighs 206.9745 amu and is 22.10%, and the fourth isotope weighs 207.